The Mummy Returns hinges on what could have been one of the best games I've ever played, but instead comes up just a bit short. The concept is very impressive: You have the choice of good vs. evil. You will be able to control the hero, Rick O'Connell, or the evil dark lord, Imhotep. Depending on whom you choose, the story line is actually different and will take you in a slight variation from the other, stealing concepts from the movie along the way. This alone adds replay value, and is highly welcome among gamers.
Think of the gameplay in The Mummy Returns as a skewed version of Tomb Raider. On your journey you will have to find items, as well as solve puzzles, in order to gain access to the next step of the game. In the same manner, you will have to run, jump, and shoot your way through tons of sword and gun wielding enemies (who re-appear). One of the coolest features is that on your way, you can actually pick weapons up from dying enemies to use against them. And when playing as Imhotep, you can actually use his dark powers to cast spells and steal souls for energy.
It's a virtual guarantee that you will have a lot of fun playing through The Mummy Returns, no doubt about it. However, a certain level of frustration will also linger as the camera movement is, at times, absolutely horrendous! There are parts in the game where you may need to make a crucial jump or throw a stick of dynamite to a certain spot, but the camera hinders your ability to accomplish this well (if at all). You will also have to get used to only being able to jump when near platform edges, and not at all times (although the gameplay doesn't require the latter).
One thing I have to note is that The Mummy Returns is a very short game. Because of this, only huge fans of the series will want to buy this one. The rest of us should probably rent. You will probably be able to work your way through the game in the few days you get while renting it. I even came across an unconfirmed Internet source saying that a tester of the game actually played through with both characters three times in only about seven hours. The first time through, it will probably take you 5-8 hours, depending on how much time it takes you to figure out how to beat the Scorpion King!